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ENERGY STAR®
Version 8.0 Computers
Draft 1 Specification Webinar
U.S. Environmental Protection Agency April 16, 2019
Introductions
• Ryan Fogle – EPA, Computers Product Lead
• John Clinger – ICF
2
Review of Specification Development Cycle
3
Current Step
Outline
• Definitions and Scope
• Internal Power Supply Requirement
• Energy Efficient Ethernet Requirement
• Updated Mode Weightings
– Desktops and Integrated Desktops
– Notebooks
– Workstations
– Thin Clients
• Desktop Requirements
• Workstation Requirements
• Test Method Updates
• Timeline & Next Steps 4
Definitions and Scope
• New Definition:
– Multi-Screen Notebook
• New Scope Exclusion:
– Handheld slates/tablets which contain cellular voice capability
5
Internal Power Supply Requirement
• EPA received feedback regarding potential subpar efficiency at lower load operating levels (e.g. 5% load). Conflicting feedback stated that current requirements are sufficient and testing at low load would increase testing burden.
• EPA reviewed recent data provided by EPRI and found that most 80Plus Gold and above power supplies perform well at lower load operating levels.
• As a compromise, EPA is proposing that the 80Plus Gold equivalent requirement introduced in Version 7 for products with greater than 500 watt nameplate rating be extended to all products with IPSs.
6
Chart above provided in written comments from NRDC
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Internal Power Supply Requirement
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Energy Efficiency Ethernet (EEE) Requirement
• EPA has observed that a majority of computer products, across all subtypes, are currently sold with Ethernet ports with a throughput capability of 1Gb/s or greater.
• All available data suggest that most if not all 1Gb/s or faster Ethernet ports support EEE.
• As such, EPA is proposing that all Ethernet ports in a product with a throughput of 1Gb/s or higher must ship with EEE enabled.
9
Mode Weightings for Desktops and Integrated Desktops
• EPA received over 700,000 individual desktop and integrated desktop data points across multiple:
– Manufacturers
– Product types
– User profiles (commercial & residential)
– Geographies
• This additional data allows EPA to separate long and short idle from sleep, allowing further refinement of the values proposed in the discussion guide.
• The scale of breadth of the data set provides confidence that these values are representative of aggregate current behavior of deployed desktops in the field.
• EPA welcomes additional large scale data sources that suggest these values are not accurate.
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Mode Weightings for Desktops and Integrated Desktops
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Mode Weightings for Notebooks
• EPA also received over 1.2 million individual desktop data points with a variety and breadth equivalent to the desktop data referenced in the previous slide.
• Given the recent finalization of Version 7.1, and the complications with translating the current notebook mode weighting results to new mode weightings, EPA is proposing to solicit feedback on the new mode weighting values, but delay implementing them until Version 9.
12
Mode Weightings for Notebooks
• Data EPA received on notebooks computers indicates that the following mode weightings could be used in Version 9:
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Mode Weightings for Workstations
• EPA received a smaller set of workstation mode weighting data comprised of roughly 8,000 data points which shows usage behavior somewhat similar to desktop computers.
• EPA is proposing to update the old workstation mode weightings with new values informed by this new data. EPA analysis shows that revising these mode weightings allows 96.2% of existing certified workstations to still meet the Version 7.1 requirements.
14
Mode Weightings for Thin Clients
• EPA tried to apply the new desktop mode weightings to the thin client data set, but found that the result drastically reduced the number of certified products which can meet the existing levels.
• As a result, EPA has decided to retain the existing desktop, integrated desktop, and thin client mode weightings from Version 7.1 for thin clients only, and has created a new table in Draft 1 as a way to carry over those existing mode weightings.
15
Desktop Requirements – Base Allowances
• EPA analysis yielding the following conclusions:
– Data set supports consolidating the previous I1 and I2 categories into a single category and renaming the existing I3 category I2.
– Data set supports maintaining the distinct D1 and D2 categories
– Switching the performance score boundary between Category I1 and I2 from 9 to 8 results in a slightly better distribution of system scores.
– Separating desktops from integrated desktops did not provide meaningful differentiation within the proposed base and functional adder allowances.
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Desktop Requirements – Base Allowances
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Desktop Requirements – Functional Adders
• Based on data and stakeholder feedback EPA is proposing the following changes to functional adders in Draft 1:
– Applying the Version 7.1 memory adder across all product types
– Applying the CEC desktop discrete graphics adder to desktop and integrated desktop products
– Creating consistent storage device adders across all product types which cover four storage types for which EPA has data to support
– Aligning the integrated display adder for integrated desktops with the ENERGY STAR Version 8 Displays specification
• EPA received feedback on other adders but lacked sufficient data to include them in the Draft 1 specification. EPA has advised those stakeholders to provide additional supporting data to consider them in Draft 2.
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Desktop Requirements – Functional Adders
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Desktop Requirements – Draft 1 Pass Rates
• Data set includes 570 unique desktop and integrated desktop families from:
– Version 7.1 computers QPL
– CEC public computers data set
– Additional non-certified computer models submitted by stakeholders
• The combination of base allowance and functional adder changes proposed in Draft 1 across the ENERGY STAR desktop and integrated desktop data set yield the following pass rates
Performance Category Pass Rate
0 55%
I1 25%
I2 26%
D1 25%
D2 31% 20
Category 0 Scatterplot Summary
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Category I1 Scatterplot Summary
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Category I2 Scatterplot Summary
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Category D1 Scatterplot Summary
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Category D2 Scatterplot Summary
25
Workstation Requirements
• Due to low ENERGY STAR workstation market share, EPA is proposing to maintain the existing workstation energy requirements from Version 7.1 in Version 8.
• EPA is planning on adopting the new mode weightings summarized in the previous section of this webinar.
• EPA has also removed the EEE adder as EEE is now a requirement for all Ethernet ports with a throughput of 1Gb/s or higher.
• EPA and DOE continue to seek feedback on whether the current active state testing is still relevant and/or whether newer benchmarks may be more appropriate.
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Test Method Updates
• Added new language clarifying how to test products which exhibit cycling behavior over long periods of time (e.g. charging cycles for notebooks).
– Includes requiring use of IEC 62301 to capture one or more complete cycles during testing if product shows cyclical behavior.
– Battery no longer needs to be disabled
• Proposing that secondary drives may be spun down in some instances for short idle testing.
• Added a test to measure sleep to wake latency
27
Timeline
• Draft 1, V8.0 Specification Webinar – Today
• Draft 1, V8.0 Specification Comment Deadline – May 3
– EPA is planning an in-person meeting on June 18 in
Washington, DC at ITI to discuss comments received and
pathway to Draft 2.
• Draft 2, V8.0 Specification – July 2019 target.
• Final Draft V8.0 Specification + Final Specification Release – Q3/Q4
2019
• V8.0 Specification Effective – July 2020
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Any Questions?
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Draft 1 Specification Comment Deadline
• Send written feedback to computers@energystar.gov
• Please include any supporting data for additions or revisions to proposed requirements and/or adders with your written Draft 1 specification feedback.
Comment Deadline
Friday, May 3, 2019
30
Thank You!
• Questions on specification development:
Ryan Fogle John Clinger
EPA ENERGY STAR and ICF
(202) 343-9153 (215) 967-9407
Fogle.Ryan@epa.gov John.Clinger@icf.com
• Questions can also be directed to computers@energystar.gov
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